It must be him…
They’re nice too, I’ll have to check them out.

In checking out the DC Comics web site, your guess seems to be correct. Although I couldn’t find those particualr issues, I did find this one:

http://www.dccomics.com/directcurrents/comics/may_03/may_03display.html?index=89

Since he did that cover it seems safe to assume that he did the others as well.